Page Table query

[Rajat Sharma]

Even I keep on seeing these errors, everytime I post anything on
kernelnewbies. Initially I kept ignoring, but looks I am not alone to
face this.

As a resolution to this, we need to remove id "amit at fibcom.com" from
kernelnewbies subscribers.

Rajat

On Sat, Feb 19, 2011 at 12:28 PM, anish singh
<anish198519851985 at gmail.com> wrote:
>
>
> On Sat, Feb 19, 2011 at 12:23 PM, Anuz Pratap Singh Tomar
> <chambilkethakur at gmail.com> wrote:
>>
>>
>> On Sat, Feb 19, 2011 at 6:40 AM, anish singh <anish198519851985 at gmail.com>
>> wrote:
>>>
>>> As i understood whenver a user space program is run it is represented in
>>> kernel using VMA which is managed by struct mm_struct
>>> and whenever the program is trying to read/write to a memory location in
>>> user space it will be directed to physical address using PAGE TABLE
>>> translation done by struct mm_struct(done in kernel space).Am i right?
>>>
>>> Suppose a simple driver wants the user to directly access its device
>>> memory then we use mmap.This mmap associates a set of user space virtual
>>> address with device driver memory and it is done by creating kernel page
>>> tables for the user space virtual addresses.Is the page table translation
>>> done everytime whenever user space does read/write to the device memory??
>>>
>>> In .nopage function call we return the page associated with the physical
>>> address which the user wants to associate with user space virtual address.Is
>>> the page address returned by the nopage function same as seen by the user or
>>> will it be converted to user space virtual address(range between 0-2 GB)?
>>>
>>> Thanks for reading.
>>
>> Can you please not post the same stuff twice?
>> Be patient, people do reply to queries here quite often, why show this
>> desperation?
>
>
> The reason i sent the mail twice was due to below mail which i am
> recieving.However sorry for causing any trouble.
> I am getting this erro whenever i am trying to send mail to kernelnewbie.
>
> The attached message had PERMANENT fatal delivery errors!
> After one or more unsuccessful delivery attempts the attached message has
> been removed from the mail queue on this server.  The number and frequency
> of delivery attempts are determined by local configuration parameters.
> YOUR MESSAGE WAS NOT DELIVERED TO ANY OF IT'S RECIPIENTS!
> --- Session Transcript ---
>  Sat 2011-02-19 12:20:43: Parsing message
> <xxxxxxxxxxxxxxxxxx\pd50001482091.msg>
>  Sat 2011-02-19 12:20:43: *  From: anish198519851985 at gmail.com
>  Sat 2011-02-19 12:20:43: *  To: amit at fibcom.com
>  Sat 2011-02-19 12:20:43: *  Subject: Page Table query
>  Sat 2011-02-19 12:20:43: *  Message-ID:
> <AANLkTimFPh=JhA5N2mZXsGKZErqJ-ZjU5ETf_Kyw6NON at mail.gmail.com>
>  Sat 2011-02-19 12:20:43: *  Route slip host: 202.71.129.104
>  Sat 2011-02-19 12:20:43: *  Route slip port: 25
>  Sat 2011-02-19 12:20:43: Attempting SMTP connection to [202.71.129.104]
>  Sat 2011-02-19 12:20:43: Attempting to send message to smart host
>  Sat 2011-02-19 12:20:43: Attempting SMTP connection to [202.71.129.104:25]
>  Sat 2011-02-19 12:20:43: Waiting for socket connection...
>  Sat 2011-02-19 12:20:43: *  Connection established (192.5.1.2:1859 ->
> 202.71.129.104:25)
>  Sat 2011-02-19 12:20:43: Waiting for protocol to start...
>  Sat 2011-02-19 12:20:43: <-- 220 smtp ready smtp.bizmail.net4india.com
>  Sat 2011-02-19 12:20:43: --> EHLO fibcom.com
>  Sat 2011-02-19 12:20:43: <-- 250-smtp.bizmail.net4india.com Hello
> fibcom.com [203.101.81.201]
>  Sat 2011-02-19 12:20:43: <-- 250-SIZE 57671680
>  Sat 2011-02-19 12:20:43: <-- 250-PIPELINING
>  Sat 2011-02-19 12:20:43: <-- 250 HELP
>  Sat 2011-02-19 12:20:43: --> MAIL From:<anish198519851985 at gmail.com>
> SIZE=6874
>  Sat 2011-02-19 12:20:43: <-- 250 OK
>  Sat 2011-02-19 12:20:43: --> RCPT To:<amit at fibcom.com>
>  Sat 2011-02-19 12:20:43: <-- 550 relay not permitted
> --- End Transcript ---
>
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